 public class EncryptAndDecrypt{
	 String encrypt(String sourceString,String password){
	 char []p= password.toCharArray();
	 int n = p.length;
	 char []c= sourceString.toCharArray();
	 int m = c.length;
	 for(int k=0;k<m;k++){
	   int mima = c[k]+p[k%n];
	   c[k] = (char)mima;
	 }
	 return new String(c);
 }
String decrypt (String sourceString,String password){
	char []p =password.toCharArray();
	int n= p.length;
	char []c =sourceString.toCharArray();
	int m = c.length;
	for(int k=0;k<m;k++){
		int mima =c[k]-p[k%n];
		c[k]=(char)mima;
	}
	return new String(c);
}}


